Bmi

An MCP tool from the Calculators server, hosted on mcp.hjlabs.in.

Body mass index from weight and height (metric or imperial), with the WHO category and the healthy weight range for that height.

Name on the gateway: math__bmi · read-only.

Parameters

Name	Type	Description
`weight` required	`number`	Weight.
`height` required	`number`	Height.
`units`	`metric \| imperial`	"metric" (kg, cm) or "imperial" (lb, in). Default metric.

Through the Smart Gateway, any client can run it by name with call_tool, or let the gateway find it with search_tools:

call_tool arguments

{
  "name": "math__bmi",
  "arguments": {
    "weight": 0,
    "height": 0
  }
}

Or connect the Calculators server directly, which lists 28 tools including this one:

Run in your terminal

claude mcp add --transport http hj-math https://mcp.hjlabs.in/mcp/math \
  --header "Authorization: Bearer YOUR_API_KEY"

Use the bmi tool with weight set to ….